Heat-resistant alloy, heat-resistant alloy powder, heat-resistant alloy structural component, and manufacturing method of the same

Abstract

A heat-resistant alloy contains Y, a content of Ni is a content of Ni is 58.0 mass % or greater, a content of Cr is 20.0 mass % or greater and 23.0 mass % or less, a content of Mo is 8.0 mass % or greater and 10.0 mass % or less, a content of Nb is 3.15 mass % or greater and 4.15 mass % or less, a content of O is 0.002 mass % or greater and 0.1 mass % or less, and a ratio of a content of Y in terms of mass to a content of O in terms of mass is 0.5 or greater and 100 or less.

The invention claimed is: 
     
       1. A heat-resistant alloy containing Y,
 wherein a content of Ni is 58.0 mass % or greater, 
 wherein a content of Cr is 20.0 mass % or greater and 23.0 mass % or less, 
 wherein a content of Mo is 8.0 mass % or greater and 10.0 mass % or less, 
 wherein a content of Nb is 3.15 mass % or greater and 4.15 mass % or less, 
 wherein a content of O is 0.002 mass % or greater and 0.1 mass % or less, and 
 wherein a ratio of a content of Y in terms of mass to a content of O in terms of mass is 0.5 or greater and 100 or less. 
 
     
     
       2. The heat-resistant alloy according to  claim 1 ,
 wherein a content of Fe is 5.0 mass % or less, 
 wherein a content of Al is 0.4 mass % or less, 
 wherein a content of Ti is 0.4 mass % or less, 
 wherein a content of Mn is 0.5 mass % or less, 
 wherein a content of C is 0.1 mass % or less, 
 wherein a content of Si is 0.5 mass % or less, 
 wherein a content of Co is 1.0 mass % or less, 
 wherein a content of S is 0.015 mass % or less, and 
 wherein balance is Ni. 
 
     
     
       3. A heat-resistant alloy powder containing the heat-resistant alloy according to  claim 1 . 
     
     
       4. A heat-resistant alloy structural component containing the heat-resistant alloy according to  claim 1 . 
     
     
       5. A manufacturing method of a heat-resistant alloy structural component comprising:
 forming heat-resistant alloy powder containing the heat-resistant alloy according to  claim 1  using molten metal to which metal Y is added; and 
 forming a structural component by shaping the heat-resistant alloy powder.